323F SA Excavator and 323F MHPU Machine Systems Caterpillar


Cylinder Drift - Check - Loaded Bucket

Usage:

323F SA FA2


Specification

Table 1
"Cylinder Drift - Check (Loaded Bucket)" 
Item  New  Service Limit  Actual 
Boom Cylinder  4.5 mm (0.18 inch) or less  11.3 mm (0.44 inch) or less   
Stick Cylinder  12.0 mm (0.47 inch) or less  30.0 mm (1.18 inch) or less   
Bucket Cylinder  18.0 mm (0.71 inch) or less  45.0 mm (1.77 inch) or less   

Table 2
Bucket Configuration Reference 
Model  Capacity  Weight  Load 
B1225HD  1.19 cubic meter (1.56 cubic yard)  1020 kg (2250 lb)  2000 kg (4409 lb) 
B1300GD  1.3 cubic meter (1.70 cubic yard)  880 kg (1940 lb)  2300 kg (5070 lb) 

Introduction

The performance level of the cylinder, the cylinder seals, and the overload relief valves for the implements can be determined with the following procedure.

Note: The machine configuration that is used during this test can affect the results of this test. Refer to Testing and Adjusting, "Operational Checks" for the machine configurations that were used for this test.

Note: The relief valve pressure settings must be set to the relief valve pressure specification before performing this operational check. Refer to Testing and Adjusting, "Specifications".

Required Tools

Table 3
Required Tools 
Description  Qty 
Measuring Tape 
Stopwatch 

Test Procedure



Illustration 1g00298378

  1. Position the machine on level ground. Refer to Illustration 1.

  2. Load the bucket. Refer to Table 2 for the correct load weight of the bucket.

  3. Raise the boom until the top stick pin is the same height as the boom foot pin.

  4. Fully extend the bucket cylinder.

  5. Fully retract the stick cylinder.

  6. Extend the stick cylinder rod 70 mm (2.8 inch) from the fully retracted position.

  7. Measure each cylinder length from cylinder pin to cylinder pin.

  8. Stop the engine.

  9. Leave the machine in this position for 3 minutes. Measure each cylinder length from cylinder pin to cylinder pin for drift.

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